... use for desiccant packing, light but extremely firm. Tyvek combines the characters of paper, thin film and cloth. Tyvek paper does ... not have any auxiliary material, the bond. It is anti-corrosive, anti-static, firm and ... 1) Remarkable permeability, but the liquid and the solid member are unable to pass2) Waterproof, guards against the dust3) Non-toxic, harmless, pure ...